/*
 * Copyright 2022-2023 Bytedance Ltd. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.bytedance.bitsail.connector.selectdb.http;

import com.bytedance.bitsail.common.util.Preconditions;

import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.client.methods.HttpPost;

import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

/**
 * Builder for HttpPost.
 */
public class HttpPostBuilder {
  String url;
  Map<String, String> header;
  HttpEntity httpEntity;

  public HttpPostBuilder() {
    header = new HashMap<>();
  }

  public HttpPostBuilder setUrl(String url) {
    this.url = url;
    return this;
  }

  public HttpPostBuilder addCommonHeader() {
    header.put(HttpHeaders.EXPECT, "100-continue");
    return this;
  }

  public HttpPostBuilder baseAuth(String user, String password) {
    final String authInfo = user + ":" + password;
    byte[] encoded = Base64.encodeBase64(authInfo.getBytes(StandardCharsets.UTF_8));
    header.put(HttpHeaders.AUTHORIZATION, "Basic " + new String(encoded));
    return this;
  }

  public HttpPostBuilder setEntity(HttpEntity httpEntity) {
    this.httpEntity = httpEntity;
    return this;
  }

  public HttpPost build() {
    Preconditions.checkNotNull(url);
    Preconditions.checkNotNull(httpEntity);
    HttpPost put = new HttpPost(url);
    header.forEach(put::setHeader);
    put.setEntity(httpEntity);
    return put;
  }
}
